VB.NET Assigning Control to Other Control

Question

i was just wondering about this

    Dim _Label As Label = Form1.Label1
    _Label.Text = "New Text" ' This work Form1.Label1.Text changed to  "New Text"

is this like ByRef is this pointer ,,, how this work ?

score 3 · Accepted Answer · answered Jan 09 '14 at 19:14

3

Yes, it is a pointer. In .NET, some types of variables always work like pointers while other types do not. In .NET, pointer types are called Reference Types while non-pointer types are called Value Types. Reference types are defined by classes. Value types are defined by structures. For instance:

Public Class MyReferenceType
    ' ...
End Class

Public Structure MyValueType
    ' ...
End Structure

Unlike some other languages, like C, where making a variable a pointer or not is determined separately for each variable, in .NET, it is defined once for the type and that decision globally affects all variables/objects of that type. Reference type objects (class objects) are always stored on the heap and value type objects (structure objects) are always stored on the stack.

answered Jan 09 '14 at 19:14

Steven Doggart

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Ok ,Thank you ,Just one Q the new label will hold the Reference of the main label not all main label as same as pointers ? – Al.Pertro Jan 09 '14 at 19:19
I'm not exactly sure what you are asking. `Label` is a class. Therefore, any `Label` variable that you declare will always act as a pointer. Is that what you were asking? – Steven Doggart Jan 09 '14 at 19:21
1

Something close to that ,,, i think i get it ,thank you very much for your help , i can't vote you up cuze i have no noreputation. – Al.Pertro Jan 09 '14 at 19:27
No problem. Glad to help! – Steven Doggart Jan 09 '14 at 19:30

VB.NET Assigning Control to Other Control

1 Answers1